Rubbing machine



2 Sheets-Sheet l Il l April 7, 1931. H. G. BARTLING RUBBING MACHINE Filed March 27, 1925 (bfOOQVO) April 7, 1931. H. G. BARTLING RUBBING MACHINE Filed March 27, 1925 2 Sheets-Sheet 2 Patented Apr. 7, 1931 UNITED STATES PAT ENT O'l'f'fl?ICEv HOWARD Gu IBAIBf'llaIN(,r QFf CHICAGO, ILLINOISQASSIGNOR; TOV SEWALL PAINT & VABNISHaCOMIANY,`"FVKANSAS CITY, MISSOURI, A CORPORATIONOF MISSOURI RUBBING' MACHINE,

Application led March .27, 1925. 4 Serial No. 18,774.

This invention relates to improvements in rubbing machines particularly adapted thoughnot necessarily limited in its use. for rubbing the surfaces of,r automobiles and 5 also polished and varnished surfaces, and

one of the objects of the invention is to provide an improved machine `of this character in which isembodied a rubbing memberadapted to eiiectivelyv rub curved, irregular and uneven surfaces, the rubbing member being rotatable and vembodying a plurality of Aseparate flexibledisclike rubbing elements, the outer `edges of vwhich are free to conform to the contour ofL the surface being operatedupon.

A further object is to provide in an improvedmachine offthis character` a rotatable rubbing memberv embodying flexible disclike rubbing elements, the peripheries of the goelements, when pressure is exerted upon the machine, being` deflected and co-operating to .present af substantially continuous surface-10i?.yieldablewmaterial to conform with the contour of the vsurface of the work, centrifugal action operating to cause the discs toV be brought back-to normal.

To theA .attainment ofl these endsv and the f accomplishment of other newV and useful objects as lwill appear, the invention consists` Figure 3 is a detai1,; vertical, sectional view'taken online 3,3, Figurel.

view taken on line 4 4, Figure-1.

Figure r5 is a front elevation-ofone formA of spacing member.

Figure' is a side elevation of 'Figure 5.

' Figure y7 ,is a front elevation of one of the Figure 4 is a detail, vertical, sectional elements constituting the rubbing member. FigureS is a side elevation of Figure Y7,

showing it in the shapey whichfit will assume when the elements areclampedxtogether.

Figurev 9 is a. detail, longitudinal sectional view. of another form of rubbing` -of spacing member used in Figure-'14.

Figurefl is a side elevation of Figure 15.

Referring more particularlyA to the drawings the numeral 2O designates generally a supporting structure which maybe of any desired size andV configuration andvis provided with a supporting vsurface 21, upon which a suitable motor or driving mechanism 22 may be mounted. A portion of the memn ber 20 `is shaped to form a shield 23' beneath which the rubbing members are located and a vhandle 24.may be provided `by means of which the machine may be manipulated or transported.

Journaled in the supporting structure 20V is ashaft 25, having a bearing 26 and an end thrust bearing 27. This shaft l25, two of which are shown .in the present invention, .re-

`ceives motion from the motor22, preferably' a shoulder 34 at one end thereof, having an inclined face 35. This member 33 may be of any desired length and diameter and is adapted to support a plurality of disc-like rubbing elements 36. These elements are constructed of any suitable flexible material and may bevof any desired diameter and of any thickness. They are sleeved upon the Vmember 33 and intermediate the elements 36 are arranged spacing members 37. These spacing members are preferably constructed of any suitable non-flexible material such as metal or the like and are held against rotation with respect to the element 33 inany suitable manner, such as by means of a key or feather 38. The spacing members 37 are of a diameter considerably less than the diameter vof the elements 36 and are preferably of a corrugated or undulated configuration of a frustro-conical shape. One of these spacing members is placed between each pair of rubbingelements 36, and one of the spacing members is alsorpreferably placed upon the member `33, so as to abut the inclined surface 35 of the collar or shoulder 34.

The outer extremity of the'member 33 is preferably Y provided with internal screw threads 39 adapted to receive a screw or fastening'device 40, and which screw or fastening device is preferably provided with `a head 41 which co-operates with the shoulder 34 so as to clamp the rubbing elements 36 .and the spacing members 37 together, and to` cause the rubbing elements 36 to conform to the contour of the spacing members 37.

When the rubbing elements 36 are thus clamped together spaces will be formed intermediate adjacent rubbing elements 36k so asto permit the peripheries of the rubbing elements 36. to be deflected, in the manner shown 1n Figure 1, against the work surface 42, whenfpressure is exerted uponthe machine andthereby cause the peripheries of the flexible members 36 to form a substantially continuous surface against the work.

f During the operation of, the machine the shield 23 which extends over the rubbing members will prevent the rubbing material or compound from being thrown out by the rubbing elements. f

Furthermore the peripheries of the flexible elements 36 will cause them to conform to the 1 contour of .any irregular or curved surface CIK which is being operated upon.

The rubblng members rotating in directions bing material in directions rubbing member.

opposed to each other will also cause the rubbing compound or material to be fed inwardly and maintained within the confines of the edges of the machine.

In the form of the invention shown in Figures 9 to 12 the-flexible rubbing elements 43 are provided with recesses or cavities 44 arranged thereabout and extending through the peripheries of the respective elements.

These elements 43 in their normal condition are fiat and are so arranged upon the supportingV or rotatable member 45, which corresponds with the member 33 in the form shown in Figure 1, that the recesses of adjacent elements 43 willv be instaggered relation with Vrespect to each other.

In the form of the invention shown in Figures 14 to 16 the spacing elements 46-are constructed of any suitable non-elastic material and are corrugated or formed with radially extending flutes so that when the rotating elements 43 and the spacing rmembers 46 are =clamped' together against a shoulder 47 on one end of themember 45 by means of the screw or-fastening device 48 atthe other end of the member 45, the rubbing elements 43 Vwill be caused to be distorted or deflected so as to conform tothe contour of the spacing members 46, as shown more 'clearly in Figure 14, and at the same time the spaces will be formed between adjacent rubbing elements 43.

In Figures 9 and 11 the spacing members 49 are flat so that when placed in position between tlie rubbing elements 43, and allv of these vparts clamped together by the screwor fastening device 48, the rubbing elements 43 of thisy form of the invention will be maintained in their normal shape.

- If desired an additional rubbing element 50 may be provided and constructed of a similrar suitable flexible material. This element 50 may be secured to the end of the member 45 by the screwor fastening device 48, through the medium of the head 51, and this element 50 is provided for the purpose of causing the iexible rubbing elements to extend beyond the member 45 so that the end of the machine may be employed for rubbing purposes and also to preventv injury to any surface with which the end of the element 45 might contact. f

In all of the forms of the invention the spacing members' are of a diameter considerably less than the diameter of the flexible rubbing elements so that the peripheries of the rubbing elements may be deflected when pressure is exerted upon the machine and the spaces between adjacent rubbing elements will permit the peripheries of the elements to be thus deliected.l f

In this form of the invention shown in Figures 10 to 12 the pockets or recesses 44 serve as a means for assisting in conveying the rublengthwise of the Obviously the pockets or recesses 44 may be arranged in any desired or suitable manner so as to cause the rubbing compound or material to be fed in any desired direction lengthwise of the rubbing member.

While the preferred forms of the invention have been herein shown and described it is to be understood that various changes may be made in the details of construction and in the combination and arrangement of the several parts, within the scope of the claims, without departing from the spirit of this invention.

What is claimed as new is l. In a rubbing machine, a rotatable element, a plurality of flexible discs sleeved upon the said element, frusto-conical spacing elements interposed between said discs and of a diameter less than the diameter of the discs whereby the peripheries of the discs will form flexible work engaging surfaces, and means exerting lateral pressure upon the discs and spacing elements for securing them together.

2. In a rubbing machine, a rotatable element, a plurality of flexible discs sleeved thereupon, non-flexible spacing elements interposed between the discs and of a diameter considerably less than the diameter of the discs, the bodies of said spacing' members having radially extended flutes, and means for forcing the discs and spacing members together laterally whereby the bodies of said discs will be deflected to conform to the contour of the bodies of the adjacent spacing members,

3. In a rubbing machine, a rotatable element, a. plurality of flexible discs comparatively wide with relation to their thickness sleeved thereupon, non-flexible spacing elements interposed between the discs and of a diameter considerably less than the diameter Of the discs, a portion of the body of said spacing elements between their axes and the peripheries thereof being displaced laterally, and means for forcing said discs and spacing elements together'.

4. A rubbing device embodying a rotatable element, a series of flexible discs sleeved upon said element, spacing means having radially extended flutes interposed between adjacent discs and of a diameter considerably less than the diameter of the discs for deflecting the peripheral portion of said discs laterally with respect to the body portions when the discs are clamped together, and means for clamping the discs together.

5. In a rubbing device, a rotatable element, a series of flexible discs secured to said element, and means interposed between adjacent discs for holding them spaced, the said means being of a diameter considerably less than the diameter of the discs, the lateral faces of said discs being inclined to a plane perpendicular to the axis of the rotatable element.

In testimony whereof I have signed m name to this specification, on this 24th day of March, A. D. 1925.

HOWARD G, BARTLING. 

